The people who invented nonalcoholic beer are working on liver without vitamins.

The line mocks the idea of creating substitutes that preserve the form of a pleasure while removing its point. Nonalcoholic beer is framed as a contradiction: beer without alcohol is, to the speaker, missing the very feature that justifies drinking it. The second clause extends the logic through an absurd analogy—“liver without vitamins”—to suggest a future of joyless, nutritionally hollow replicas. The humor depends on exaggeration and on a cynical view of health-conscious or market-driven innovations: they promise virtue (less alcohol, more “responsible” consumption) but deliver a diminished experience.